Malicious PDF — malware analysis report

Static analysis result for SHA-256 f59a220b46bd0d60…

MALICIOUS

PDF

44.1 KB Created: 2020-09-12 16:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02818646f3ee0141ef3f20a3aba8cd1b SHA-1: 9131f4b887896cb0a30b62cc1c3e6f8ebf2650c0 SHA-256: f59a220b46bd0d60f0ecc5f76321907772ddf18648de4c8d83663b1ed33475c1
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure related to 'Vro omr sheet answer key 2018' and embeds a link to a redirector at 'https://ttraff.club/wix?keyword=vro+omr+sheet+answer+key+2018'. This redirector is flagged as malicious. Additionally, the document exhibits characteristics of an MFA lure, suggesting an attempt to harvest credentials or session tokens. The file also contains a large number of links to benign Shopify-hosted PDFs, likely part of a link farm to improve SEO for the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.club/wix?keyword=vro+omr+sheet+answer+key+2018 In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/tidetixifimokarije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4117/7252/files/5413330120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/vipefivokuvim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6580/2903/files/fevugojobuxix.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5ecadc_c241f0d1688a41359de765eb04de0bc6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/40520074602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3317/3927/files/avery_dna_transforming_principle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/86671610857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/90838843539.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6260 5636 bytes
SHA-256: 32e3dd05dc0293148c5e7dc49f13da58608b6ae8106fedcfa32cbd41119270b3
font_01_sfnt_off00007579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7579 1936 bytes
SHA-256: 19d579821e83c32cd478aefcb57f849508ece8625c42f2108810477b29a00d2f
font_02_sfnt_off00007ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBF 10960 bytes
SHA-256: 1da3835e5cfcaf79c97e26798741446d1cd5b6dcd903e8c0f4e26f4576dddf06

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